How do capacitors behave in DC and AC circuit?

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Lauren Andrews · Accepted Answer

DC:
Due to the fact that a constant current cannot flow across a capacitor, they are not used in DC circuits. A transient current is created as the capacitor plates charge when an uncharged capacitor C is placed across the terminals of the battery at a voltage V. However, current flows when the positive plate's charge Q reaches the value of Q=CV. Since the electric field between the plates neutralizes the impact of the battery's electric field, there is no longer any charge transfer. In a DC circuit, a capacitor essentially functions as a circuit breaker as its plates are charged.
AC:
After being connected to DC voltage, capacitors can be used as temporary storage devices. The capacitors will stop allowing any more electrons to reach the plates once they are fully charged. As a result, when the capacitor is fully charged, the DC is cut off. The capacitor will charge and discharge at a frequency determined by the frequency of the supplied AC voltage when we add alternating voltage to it. The capacitance of the capacitor in the AC circuit is determined by the frequency of the input signal, which is continuously charged (or discharge).

How do capacitors behave in DC and AC circuit?

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